Bond yields have risen and the dollar has fallen on the prospect of more stimulus if Democrats take control of the US Senate following a run-off election in Georgia.
Meanwhile, oil hit an 11-month high after Saudi Arabia agreed to reduce output more than expected.
Democratic challenger Raphael Warnock beat Republican incumbent Kelly Loeffler in one of two Senate races in the state, TV networks and Edison Research projected.
Democratic challenger Jon Ossoff held a slim lead over Republican David Perdue in the other, with 98 per cent of votes counted, according to Edison.
Along with a narrow majority for Democrats in the House of Representatives, a ‘blue sweep’ of Congress could usher in larger fiscal stimulus and pave the way for President-elect Joe Biden to push through greater corporate regulation and higher taxes.
“A Democratic-led government is expected to add more stimulus, essentially spend more, to help mitigate the virus crisis,” Paul Sandhu, head of multi-asset quant solutions, APAC, at BNP Paribas Asset Management in Hong Kong, said.
“That means that there’s going to be a weaker dollar.”
Analysts generally assume a Democrat-controlled Senate would be positive for economic growth globally and thus for most riskier assets, but negative for bonds and the dollar on the assumption the US budget and trade deficits would swell even further.
The 10-year US Treasuries yield rose above 1 per cent for the first time since March, on expectations of larger government borrowing under a Senate split 50-50 with Vice President-elect Kamala Harris, as president of the upper chamber, becoming the tie-breaker.
“History tells us it is much easier to get things done when one party controls everything, as Democrats and Republicans have had difficulties co-operating for at least 30 years,” Danske analysts said in a note.
German bond yields followed Treasuries to hit their highest in almost five weeks.
The euro rose to as high as $US1.2344, a level last seen in April 2018, while the yen hit a 10-month high of 102.57 to the US dollar.
The US dollar hit its lowest in nearly six years against the Swiss franc.
Bitcoin rose more than 5 per cent to a record high of $US35,879 .
World stocks gained 0.1 per cent, edging back towards recent record highs, and European stocks ticked up 0.08 per cent.
But futures for the U.S. benchmark S&P 500 fell 0.7 per cent, while Nasdaq futures slid 2.1 per cent, on fears Democrats could pursue tighter regulations on big tech firms.
Other industries, such as banks, oil and gas and healthcare, could come under heavier scrutiny, while infrastructure and alternative energy sectors could benefit.
Oil prices rose to their highest since February 2020 after Saudi Arabia agreed to reduce output more than expected in a meeting with allied producers, while industry figures showed US crude stockpiles were down last week.
US crude futures rose to a high of $US50.24 a barrel before trimming gains, having climbed 4.9 per cent on Tuesday.
International benchmark Brent crude futures rose 0.54 per cent to $US53.89.
In Asia, Japan’s Nikkei fell 0.4 per cent while MSCI’s index of Asian-Pacific excluding Japan erased earlier gains to trade flat.
Shanghai stocks extended gains, with the CSI300 index rising 0.7 per cent and reaching its best levels since 2008, shrugging off New York Stock Exchange’s chaotic handling of how it will treat Chinese companies to comply with sanctions set by the Trump administration.
The exchange made a second sudden U-turn as it said it was reconsidering its plan to allow three Chinese telecom giants to remain listed.